// SPDX-License-Identifier: GPL-2.0-only // // DA9121 Single-channel dual-phase 10A buck converter // // Copyright (C) 2020 Axis Communications AB // // DA9130 Single-channel dual-phase 10A buck converter (Automotive) // DA9217 Single-channel dual-phase 6A buck converter // DA9122 Dual-channel single-phase 5A buck converter // DA9131 Dual-channel single-phase 5A buck converter (Automotive) // DA9220 Dual-channel single-phase 3A buck converter // DA9132 Dual-channel single-phase 3A buck converter (Automotive) // // Copyright (C) 2020 Dialog Semiconductor #include <linux/of.h> #include <linux/gpio/consumer.h> #include <linux/regulator/of_regulator.h> #include <linux/regulator/machine.h> #include <linux/regulator/driver.h> #include <linux/module.h> #include <linux/regmap.h> #include <linux/err.h> #include <linux/i2c.h> #include <linux/regulator/da9121.h> #include <linux/interrupt.h> #include <linux/workqueue.h> #include "da9121-regulator.h" /* Chip data */ struct da9121 { … }; /* Define ranges for different variants, enabling translation to/from * registers. Maximums give scope to allow for transients. */ struct da9121_range { … }; static struct da9121_range da9121_10A_2phase_current = …; static struct da9121_range da9121_6A_2phase_current = …; static struct da9121_range da9121_5A_1phase_current = …; static struct da9121_range da9121_3A_1phase_current = …; static struct da9121_range da914x_40A_4phase_current = …; static struct da9121_range da914x_20A_2phase_current = …; struct da9121_variant_info { … }; static const struct da9121_variant_info variant_parameters[] = …; struct da9121_field { … }; static const struct da9121_field da9121_current_field[2] = …; static const struct da9121_field da9121_mode_field[2] = …; struct status_event_data { … }; #define DA9121_STATUS(id, bank, name, notification, warning) … /* For second buck related event bits that are specific to DA9122, DA9220 variants */ #define DA9xxx_STATUS(id, bank, name, notification, warning) … /* The status signals that may need servicing, depending on device variant. * After assertion, they persist; so event is notified, the IRQ disabled, * and status polled until clear again and IRQ is reenabled. * * SG/PG1/PG2 should be set when device first powers up and should never * re-occur. When this driver starts, it is expected that these will have * self-cleared for when the IRQs are enabled, so these should never be seen. * If seen, the implication is that the device has reset. * * GPIO0/1/2 are not configured for use by default, so should not be seen. */ static const struct status_event_data status_event_handling[] = …; static int da9121_get_current_limit(struct regulator_dev *rdev) { … } static int da9121_ceiling_selector(struct regulator_dev *rdev, int min, int max, unsigned int *selector) { … } static int da9121_set_current_limit(struct regulator_dev *rdev, int min_ua, int max_ua) { … } static unsigned int da9121_map_mode(unsigned int mode) { … } static int da9121_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) { … } static unsigned int da9121_buck_get_mode(struct regulator_dev *rdev) { … } static const struct regulator_ops da9121_buck_ops = …; static struct of_regulator_match da9121_matches[] = …; static int da9121_of_parse_cb(struct device_node *np, const struct regulator_desc *desc, struct regulator_config *config) { … } #define DA9121_MIN_MV … #define DA9121_MAX_MV … #define DA9121_STEP_MV … #define DA9121_MIN_SEL … #define DA9121_N_VOLTAGES … static const struct regulator_desc da9121_reg = …; static const struct regulator_desc da9220_reg[2] = …; static const struct regulator_desc da9122_reg[2] = …; static const struct regulator_desc da9217_reg = …; #define DA914X_MIN_MV … #define DA914X_MAX_MV … #define DA914X_STEP_MV … #define DA914X_MIN_SEL … #define DA914X_N_VOLTAGES … static const struct regulator_desc da9141_reg = …; static const struct regulator_desc da9142_reg = …; static const struct regulator_desc *local_da9121_regulators[][DA9121_IDX_MAX] = …; static void da9121_status_poll_on(struct work_struct *work) { … } static irqreturn_t da9121_irq_handler(int irq, void *data) { … } static int da9121_set_regulator_config(struct da9121 *chip) { … } /* DA9121 chip register model */ static const struct regmap_range da9121_1ch_readable_ranges[] = …; static const struct regmap_access_table da9121_1ch_readable_table = …; static const struct regmap_range da9121_2ch_readable_ranges[] = …; static const struct regmap_access_table da9121_2ch_readable_table = …; static const struct regmap_range da9121_1ch_writeable_ranges[] = …; static const struct regmap_access_table da9121_1ch_writeable_table = …; static const struct regmap_range da9121_2ch_writeable_ranges[] = …; static const struct regmap_access_table da9121_2ch_writeable_table = …; static const struct regmap_range da9121_volatile_ranges[] = …; static const struct regmap_access_table da9121_volatile_table = …; /* DA9121 regmap config for 1 channel variants */ static const struct regmap_config da9121_1ch_regmap_config = …; /* DA9121 regmap config for 2 channel variants */ static const struct regmap_config da9121_2ch_regmap_config = …; static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip) { … } static int da9121_assign_chip_model(struct i2c_client *i2c, struct da9121 *chip) { … } static int da9121_config_irq(struct i2c_client *i2c, struct da9121 *chip) { … } static const struct of_device_id da9121_dt_ids[] = …; MODULE_DEVICE_TABLE(of, da9121_dt_ids); static int da9121_i2c_probe(struct i2c_client *i2c) { … } static void da9121_i2c_remove(struct i2c_client *i2c) { … } static const struct i2c_device_id da9121_i2c_id[] = …; MODULE_DEVICE_TABLE(i2c, da9121_i2c_id); static struct i2c_driver da9121_regulator_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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